JP7223922B2 - Elastic buff ring and its processing method - Google Patents

Description

In the present invention, a rubber material, a special fiber material, or a special leather material is made into an elastic material for polishing while increasing or decreasing the outer diameter of the grindstone with respect to the inner/outer diameter or flat surface of the work material. The present invention relates to an elastic buff ring formed as a special elastic buff ring (elastic buff) fixed to a plate-like surface.
Furthermore, for the purpose of improving the shape accuracy and roughness of the surface finishing of iron and non-ferrous work materials, honing wheels capable of high-precision processing from grinding and polishing work materials to honing and lapping finishes. It is a grinding, honing, and polishing method that enables fine performance by controlling the static pressure and pressure of the coolant liquid supplied to the special elastic buff inside the grinding wheel to achieve the required characteristics of increasing and decreasing the diameter.

In recent years, when grinding, honing, and polishing the inner diameter of the work material, it is necessary to polish the surface of the work material in a three-dimensional shape using a honing grindstone that increases or decreases the inner diameter, a buffing grindstone, or a balloon-shaped rubber grindstone. A sharpening stone is provided. A coolant-passing grindstone is provided for supplying and passing coolant through the grindstone from the center of the grindstone to the processing point.

First, there is a honing tool capable of controlling the radial direction of the honing tool so as to perform highly accurate drilling without being affected by abrasion of the honing grindstone.
The structure consists of a main shaft that rotates with the honing unit attached to the tip, and a honing unit control mechanism that provides relative rotation to the main shaft by numerical control to a control shaft provided through the main shaft. wherein the honing unit engages with the control shaft and rotates together with the control shaft, a screw formed at the tip of the connection shaft meshes with the rotation of the connection shaft to move in the axial direction. A nut, a radial control shaft that is connected to the nut and moves in the axial direction, is disposed on the peripheral surface of the radial control shaft, and axial movement of the radial control shaft moves the honing grindstone in the radial direction. A numerically controlled honing device comprising a honing tool and capable of controlling the honing tool in the radial direction even during rotation of the spindle (see, for example, Patent Document 1).

Next, in order to polish the three-dimensional surface of the work material with a balloon-shaped rubber whetstone that serves as a grinding and polishing device, a whetstone or abrasive grains are contained or fixed on the surface in a three-dimensional hollow body. and a grinding and polishing apparatus in which a pressure medium of a constant pressure is applied from a pressure control mechanism and the hollow body is sealed. The hollow body is made of a flexible material such as rubber, woven fabric, or synthetic resin, and has fine holes and liquid permeability (see, for example, Patent Document 2).

Furthermore, the grindstone that allows coolant to pass through the grindstone is a wire mesh grinding wheel with a coolant guide base metal. A coolant guide comprising a wire mesh ring, a recessed fitting portion for fitting and fixing the inner peripheral surface of the wire mesh ring, and a support portion held by a tool holder. The through-hole communicates with a large number of discharge ports formed on the outer peripheral surface of the fitting portion (see, for example, Patent Document 3).

Furthermore, the grindstone having the ability to pass the coolant liquid through the grindstone includes a wire mesh body in which a core wire having a through hole inside the core wire is formed in a cylindrical shape, and a bird's nest in which abrasive grains are baked or electrodeposited on the tip surface of the wire mesh body. In the above-mentioned bird's-nest grinding wheel, the grinding fluid or the coolant liquid, which is press-fitted from the through hole in the rear end core wire of the wire mesh body constituting the above-mentioned bird's nest grinding wheel, is passed through the through hole opened at the tip of the wire mesh body to the cutting edge abrasive grains. (For example, see Patent Document 4.).

Furthermore, there is an elastic grindstone that is less likely to cause unevenness on the grindstone surface, has a longer life, and has a strong abrasive grinding power. It consists of a fibrous or needle-like nylon having a predetermined length and having a melting point of 150° C. or higher, in which abrasive grains are kneaded in an amount of 50 to 80% by weight; An elastic grindstone in which a mixture of short fibers with a strength of d or more and a fiber diameter of 1.0 mm or less is hardened into a roll through an adhesive that exhibits rubber elasticity with an elongation of 40% or more after curing. There is (for example, see Patent Document 5).

Further, the polishing grindstone is a polishing grindstone for polishing a plate-like work material, and is a polishing grindstone that does not cause polishing unevenness and has good pressure responsiveness. The structure is a polishing whetstone in which a porous elastic body 2 is provided on a cylindrical core material 1, and a polishing layer 4 is provided on the outer periphery of the porous elastic body 2. The porous elastic body 2 is made of rubber. To provide a polishing whetstone which is a sponge. The rubber sponge 2 preferably has a rubber hardness of 5 to 40 on a rubber hardness tester C scale and a rebound resilience of 50 to 9% (see, for example, Patent Document 6).

Furthermore, the coolant is accurately supplied to the machining point between the outer circumference of the cutting wheel that cuts the workpiece and the machining point between the workpiece, suppressing the wear of the cutting edge part such as the grindstone configured in the cutting wheel and improving the quality of the workpiece. There is a cutting wheel to plan. The configuration is such that a cutting whetstone having a whetstone 18 fixed to the outer periphery of a base metal 17 is provided with a coolant supply port 23 at the center of rotation of the base metal 17, and the coolant is ejected to the outer periphery of the base metal 17 and the whetstone 18. A coolant jet 21 is provided. A sealed coolant passage 20 is provided in the cutting grindstone 2 to communicate the coolant ejection port 21 and the coolant supply port 23 . Since the coolant can be ejected from the coolant ejection port 21 through the coolant passage 20, when the cutting wheel 2 is rotated to cut the workpiece, the coolant is directed to the machining point where frictional heat is generated between the outer periphery of the cutting wheel 2 and the workpiece. The coolant can be accurately supplied, and cooling and free powder removal can be reliably performed (see, for example, Patent Document 7).

Furthermore, it is softer than conventional polyvinyl acetal-based whetstones that contain thermosetting resin, which is harder than rubber whetstones and less prone to clogging. There is a highly elastic whetstone that enables The composition is a highly elastic grindstone comprising a binder containing at least polyvinyl acetal resin, abrasive grains and pores, and the binder further contains a rubbery polymer. Preferably, It can contain 30 to 60% by weight of polyvinyl acetal resin, 10 to 50% by weight of rubbery polymer, and 0 to 40% by weight of thermosetting resin (see, for example, Patent Document 8).

JP-A-8-216015 JP-A-61-230857 Japanese Patent No. 6041248 Japanese Patent No. 6041249 JP-A-10-156725 JP 2006-326795 A JP 2012-143836 A JP 2014-136267 A

JP-A-8-216015 discloses that a taper cone accommodated in a honing head body moves in the axial direction independently of the taper cone, thereby forcing the stop side portion of the wheelhead radially as it moves toward the stop side of a machined hole. A honing head for drilling a bottomed hole configured to be expanded is a diameter increasing honing grindstone for processing in which the outer diameter of the honing grindstone is increased or decreased by mechanical means. For this reason, there is a mechanical friction part, and the taper cone is mechanically forcibly controlled for fine movement in the axial direction of the rotating main shaft. In addition to this, there is also the problem that mechanical stress is applied to the grindstone, making it difficult to obtain a highly accurate ground surface.

In JP-A-61-230857, the hollow body to be the grindstone is made of a flexible material such as rubber, woven fabric, synthetic resin, etc., and the hollow body has fine holes and is liquid permeable. Although there are various types of materials, precise grinding cannot be guaranteed because the hollow body deforms excessively when it is pressed against the grinding surface during the action of the grinding wheel.

Japanese Patent No. 6041248 and Japanese Patent No. 6041249 both describe grindstones having a coolant fluid permeability. This grindstone is a wire mesh grinding wheel with a coolant guide base metal, and the wire mesh material is formed into a cylinder, or a wire mesh body grinding wheel in which a core wire having a through hole inside the core wire is formed in a cylindrical shape. Therefore, although it has excellent coolant permeability, when it is strongly pressed against the grinding surface during grinding, the hollow body deforms excessively and precise grinding cannot be guaranteed.

Further, it is said that the elastic grindstone disclosed in Japanese Patent Application Laid-Open No. 10-156725 is less likely to cause unevenness on the surface of the grindstone, has a long service life, and provides a strong abrasive grinding power. However, since the entanglement between the fibers is weak, there is an action of unraveling the fibers in the actual polishing action, and as a result, if the grinding wheel is strongly pressed against the grinding surface for polishing and honing, the elastic wheel will be short-lived at the standing place. Shortcomings are pointed out.

Further, the polishing grindstone disclosed in Japanese Patent Application Laid-Open No. 2006-326795 is a polishing grindstone in which a porous elastic body 2 is provided on a cylindrical core material 1 and a polishing layer 4 is provided on the outer periphery of the porous elastic body 2. The porous elastic body 2 is a rubber sponge. Therefore, if the grinding surface is ground with a strong pressing force, the rubber sponge of the porous elastic body 2 having weak rigidity is greatly distorted, and a highly accurate ground/honed surface cannot be obtained.

Further, the cutting wheel and the cutting method disclosed in Japanese Patent Application Laid-Open No. 2012-143836 are for cutting a workpiece, and since they are thin grinding wheel cutters, they are completely different from the elastic buff ring of the present invention.

In addition, the high-elasticity grindstone disclosed in Japanese Patent Laid-Open No. 2014-136267 is a high-elasticity grindstone composed of a binder containing at least polyvinyl acetal resin, abrasive grains, and pores. is lubricated with a coolant liquid, and its specific use is not specified.

The conventional rubber-based grindstones generally have a general structure as shown in FIG. 9(a). That is, (1) the rubber-based grindstone 1 has elasticity, but generally has poor hydrophilicity. For this reason, the coolant liquid CK does not penetrate into the rubber 2, and the coolant liquid is not extracted from the rubber, so the polishing performance is _inferior .・Stops with policing.
(2) Therefore, as shown in FIG. 9(b), even if a channel hole h is provided in the rubber 2 of the rubber-based grindstone 3 from the center to the outer peripheral direction, the penetration of the coolant liquid CK into the rubber 2 is not desired at all.
(3) Furthermore, as shown in FIG. 9(c), even if the rubber 2 is thinly sliced and laminated to form a rubber whetstone 4, the coolant liquid CK cannot be expected to permeate into the rubber at all. That is, since the hydrophilicity of rubber is not improved, this type of rubber grindstone swells very little. Only the coolant passes through. Therefore, conventionally known elastic rubber grindstones have been limited to selecting the hardness of the rubber. For this reason, the development theme of conventional elastic rubber grindstones was limited to simply changing the material.

Therefore, the inventors of the present application have found that (1) a material having a high affinity for water and oil is desired as an elastic material for this type of elastic buff ring. (2) The elastic material should be highly hydrophilic and have excellent abrasion resistance. (3) Excellent adhesion to abrasive grains, and excellent affinity between the work material, the abrasive grains, and the elastic material. (4) In supplying the coolant from the center of rotation of the elastic buff ring composed of pores, it was recognized that there was a demand for the development of a new supply method that is not limited to ordinary coolant supply methods.

That is, in this type of elastic buff ring body (buff), in supplying the coolant liquid from the rotation center into the elastic buff consisting of pores, it is desired to develop a new supply method that is not limited to the ordinary coolant supply method. It is rare.

In view of the various problems associated with the elastic buff and elastic rubber grindstone according to the prior art as described above, the inventors of the present application have developed a novel coolant liquid pressure that supplies the characteristic performance required for the elastic buff ring body to the inside of the buff. We have researched and developed an elastic buff ring that can be processed from polishing to honing and lapping by controlling the waveform and its processing method.

Elastic buffs from polishing to honing and lapping finishes for the inner and outer diameters and flat surfaces of the work material, which is the object of the present invention, are rubber materials, special fiber materials, and special leather materials that polish while increasing and decreasing the outer diameter of the grindstone. , a paper member, an artificial resin material, or the like is made into an elastic buffing material, and this elastic buffing material is formed into a disc, bar, or plate shape.

In addition, for the purpose of improving the shape accuracy and roughness of the surface finish of iron and non-ferrous materials, we have internal diameter processing and diameter honing that enables high-precision processing, from polishing the work material to honing and lapping finishing. related to. In addition, the grinding, honing, and polishing processing methods that enable fine performance by controlling the static pressure and pressure of the coolant liquid supplied to the special elastic buff inside the buff to achieve the characteristic performance of increasing and decreasing the diameter required for the buff. be.

A processing method using an elastic buff ring according to claim 1, wherein the buff material of the elastic buff ring for grinding, honing, and polishing a surface of a work material is a thin circular elastic body, and the thin circular elastic body consists of a thin circular laminated ring made of felt, woven fabric, non-woven fabric, leather, paper, artificial or natural resin, or rubber, or a mixture thereof, and abrasive grains are fixed to the entire thin circular laminated ring. Alternatively, it is an elastic buff ring body in which abrasive grains are fixed to the outer peripheral surface of a thin circular laminated ring body, and the elastic buff A coolant guide plate made of paper, a resin plate, or a metal plate having the same shape as the circular buff member and radially forming coolant passage grooves on both sides of the circular buff member, and the coolant guide plate. It consists of two side wall guide plates of the same shape as the plate and made of paper or resin plate or metal plate with coolant passage grooves formed on one side. In an elastic buff ring formed by sandwiching and laminating two side wall guide plates on both ends of a buff material toward a circular buff material,
The coolant liquid from the coolant supply device is made into an emulsion and sent into the axial core portion of the elastic buff ring through the center through opened in the main shaft of the processing machine, and is fed into the passage grooves of the side wall guide plates sandwiching the elastic buff ring from both sides. When passing through the inside, the circular buff material is permeated into the circular buff material to slightly increase the diameter of the circular buff material, and then sprayed from the elastic buff ring to the surface of the work material to cool and lubricate the grinding point while grinding. , honing or polishing.

In the processing method using the elastic buff ring of claim 1 , when the coolant liquid CK is supplied to the gaps between the multilayered circular buff members with good permeability, the circular buff members are slightly increased in diameter in the outer diameter direction. This diameter-increasing expansion enhances the grinding action on the inner hole of the material to be cut. That is, the coolant permeates into the buffing cloth while slightly increasing the diameter of the circular buffing material in the direction of the outer diameter, so that grinding, honing or polishing is superior to the conventional grinding method.

1 is a system diagram of a honing method, showing a first embodiment of the present invention; FIG. It is each elastic buff ring body of this invention, and this whole block diagram. FIG. 2 is an overall configuration diagram of each elastic buff ring of the present invention; FIG. 4 is an exploded view of each elastic buff ring of the present invention; FIG. 4 is an exploded view and an assembly view of each elastic buff ring of the present invention; FIG. 4 is a modified implementation diagram of each elastic buff ring of the present invention; FIG. 4 is an operation diagram of the elastic buff ring of the present invention; FIG. 4 is an operation diagram of the elastic buff ring of the present invention; FIG. 2 is a cross-sectional view of a conventional elastic grindstone;

Each elastic buff ring of the present invention and its honing method will be sequentially described below with reference to FIGS. 1 to 8. FIG. In particular, FIG. 1 and FIG. 7 disclose the novel technical content of the present invention.

First, referring to FIG. 2, the configuration of the buff material (described later) of each elastic buff ring 10, 20, 30 of the present invention will be described. Each of the elastic buff rings 10, 20, 30 is fastened to the tip of a main shaft with a center through of a processing machine via a holder (each member is not shown). , 20, 30, and the center holes 10a, 20a, 30a of the elastic buff rings 10, 20, 30, respectively, to connect the center through S and the center holes of the elastic buff rings. Holes S1, S2, . . . are opened. Each of the elastic buff rings 10, 20 and 30 is fastened to the tip screw portion 1b with a washer K and a nut N while being fitted to the mounting portion 1a of the shaft portion 1. As shown in FIG.

As shown in FIGS. 2 and 3, the elastic buff ring 10 is composed of a single rubber elastic body 11, a laminate 12 of woven fabric, nonwoven fabric, leather, paper, etc., and a laminate 13 of artificial resin. It is The elastic buff ring 20 is made by kneading the abrasive grains 13 into the rubber elastic body 11 alone. Abrasive grains 13 adhere only to the surface of the rubber elastic body 11 and others. Further, the elastic buff ring 30 is a laminate 14 in which the single rubber elastic body 11 is formed of air bubbles K0, or in this laminate 14, radial through holes h are opened from the center hole 30a toward the outer peripheral surface. It consists of a laminate 15 and the like.

That is, the elastic buff rings 10, 20, and 30 are made of thin circular elastic bodies, woven fabrics, non-woven fabrics, leather, paper, synthetic or natural resins, or rubber-based lamination rings. Abrasive grains are kneaded and fixed to the laminated ring 20, and the buffing material of the elastic buff ring fixes the abrasive grains 13 only to the surface of the laminated ring, so that the abrasive grains are efficiently used without waste. , high-precision grinding, honing, and polishing.

4 and 5, the elastic buff ring bodies 40, 45, which are the core of the present invention in the elastic buff ring bodies 10, 20, 30, will now be described in detail. First, in FIG. 3, the elastic buff ring 40 shown in FIG. and a coolant guide plate (grindstone groove plate) 42 made of paper or a resin plate or a metal plate having the same shape as the circular buff member 41a and radially forming passage grooves 42a for the coolant liquid CK on both side surfaces, and the guide plate. It consists of two side wall guide plates (side plates) 43 of the same type and made of paper, a resin plate, or a metal plate having a passage groove 43a for the coolant liquid CK formed on one side thereof. The circular buff members 41a and the guide plates 42 are alternately or irregularly laminated, and two side wall guide plates 43 are placed on the circular buff members 41a with the passage grooves 43a facing the circular buff members 41a. Laminated.

Next, the elastic buff ring 45 will be described with reference to FIG. 4(b). The structure consists of a circular buffing material 41a formed by molding a buffing material (felt, woven fabric, nonwoven fabric, leather, paper, rubber, etc.) into a circular shape, and a channel groove 43a of the same shape as the circular buffing material 41a for the coolant liquid CK. It consists of two side wall guide plates (side plates) 43 made of paper or resin plate or metal plate radially formed on the side surface, and a plurality of circular buff materials 41a are laminated, and two sheets are laminated for the circular buff material. is laminated toward the circular buff material.

The buff material (felt, woven fabric, non-woven fabric, leather, rubber, etc.) 41 in the elastic buff rings 40 and 45 is formed into a circular shape to form a circular buff material 41a. A process diagram of forming a coolant guide plate (groove plate between grindstones) 42 from a paper or resin plate or metal plate with CK passage grooves 42a radially formed on both sides, an assembly drawing thereof, and circulation action of the coolant liquid CK in the buff. The diagrams are explained in FIGS. 5 and 8. FIG.

5 and 8, the type of buff material (felt, woven fabric, non-woven fabric, leather, paper, rubber, etc.) 41, the coolant guide plate (groove plate between grinding wheels) 42, the buff internal liquid (buff internal gas) coolant A manufacturing process with liquid CK will be described. First, in the elastic buff ring 40, the buff material 41 is a cloth (woven cloth) 41 woven with natural or artificial fibers, and is cut into a circular buff material 41a. In the drawing, three types of buffing members 41 and this circular buffing member 41a are shown. A coolant guide plate (groove plate between grindstones) 42 having channel grooves 42a formed radially on both sides has water channel grooves radially recessed from the center of rotation of machined metal, machined sheet metal molded resin or molded hardened corrugated cardboard. It consists of thin plates. The circular buffing material 41a and the coolant guide plate (groove plate between grindstones) 42 are alternately laminated, and two side wall guide plates 43 are laminated on both ends with the passage groove 43b facing the circular buffing material 41a. . The elastic buff ring 45 is the same as the elastic buff ring 40, except that the guide plate (groove plate between grindstones) 42 is omitted.

The elastic buff rings 40 and 45 constitute a buff internal liquid (buff internal gas) and a polishing mechanism (grinding, honing/polishing mechanism). That is, the coolant liquid CK passes through the water passage (passage groove 42a) of the coolant guide plate (grinding wheel groove plate) 42 from the rotation center of the elastic buff ring bodies 40 and 45 to the outer peripheral processing point where it contacts the work W. A polishing method of jetting and direct cooling and lubrication is implemented. A perspective view of the procedure for assembling the elastic buff ring bodies 40 and 45 and a working diagram of the injection of the coolant liquid CK after assembly are shown in FIGS. 5 and 8 as described above.

Next, FIG. 1 shows the systematic relationship of the processing method for supplying the coolant liquid CK to the elastic buff rings 40 and 45 . The general configuration is such that the coolant supply device 50 is controlled by the NC program PG from the NC control device 60, and the coolant liquid CK at static pressure P0 to pulsating pressure P1, P2, P3 is supplied to the main shaft of the processing machine from the center through S. When passing through the axial core portions of the elastic buff rings 40 and 45, each circular buff material 41a permeates and slightly expands in the outer diameter direction, and is sprayed from the outer peripheral surfaces of the elastic buff rings 40 and 45 onto the work material W. Grinding, honing or polishing while cooling and lubricating.

The coolant supply device 50 supplies coolant CK at static pressure P0 to pulsating pressures P1, P2, and P3 controlled by the NC program PG from the NC controller 60 through a center through hole S formed in the main shaft of the processing machine as an elastic buff. It is fed into the axial center portions (center holes to be supported) of the annular bodies 40 and 45 . In the coolant supply device 50, the coolant liquid CK is discharged from the two-cylinder plunger pump P (single-cylinder AC, BC) that supplies the coolant liquid CK in the tank T by the motor MO of the drive source, and the plunger pump P Equipped with check valves V1 to V5 and switching valves V6 and V7 for switching the coolant liquid CK with pulsating pressure in various ways. By switching the check valves V1 to V5, a route is formed for piping and supplying four types of coolant liquids CK to the grinding wheel 10 for increasing/decreasing diameter for inner diameter machining. Under the control of the NC program PG from the NC control device 60, the coolant liquid CK to be discharged is controlled by the pressure P1 of the single cylinder AC, the pressure P2 of the single cylinder BC, the combined pressure (P1+P2) P3 of both, and the combined pressure (P1+P2) P3 is put into the accumulator AQ and it is switched to 4 kinds of constant pressure P0.

Furthermore, in order to make the coolant liquid CK a cooling gas OK, as shown in FIG. 1, it is supplied from a cold air supply device 70 that cools air E in the atmosphere to −40° C. or lower.

The buff member 41a of the elastic buff ring bodies 40 and 45 having the above structure exhibits the following effects. First, the thin elastic bodies 40 and 45 are made of a laminated ring made of woven fabric, non-woven fabric, leather, paper, synthetic or natural resin, or rubber, and abrasive grains are kneaded and fixed to the laminated ring. . As a result, the coolant CK has excellent permeability to the buffing material 41a and expands slightly in the radial direction, so that honing and polishing can be performed efficiently and with high accuracy.

In addition, if the buff material 41a of the elastic buff rings 40 and 45 adheres the abrasive grains 13 only to the surfaces of the laminated rings, efficient and highly accurate honing can be achieved without using unnecessary abrasive grains. Polishing processing can be performed.

Furthermore, the elastic buff ring bodies 40 and 45 are formed by alternately laminating circular buff members 41a and guide plates 42, and two side wall guide plates 43 are attached to the circular buff member so that the passage groove 43a is formed by the circular buff member. 41a, the coolant (emulsion) from the shaft of the elastic buff ring penetrates well into the gaps between the multi-layered buff materials, and the coolant ejected from the outer peripheral surface of the elastic buff ring Highly accurate grinding, honing, and polishing can be performed by efficiently lubricating the work material W.

Furthermore, as shown in FIG. 7, the elastic buff ring bodies 40 and 45 are formed by stacking circular buff members 41a, and two side wall guide plates 43 are attached to the circular buff member so that the passage groove 43a is formed by the circular buff member. , the coolant efficiently permeates from the shaft portion of the elastic buff ring to the passage groove of the guide plate and into the gaps on both sides of the multi-layered buff material. This penetrates the entire buffing material with good permeability, and squirts out from the outer peripheral surface of the elastic buff ring. Thus, highly accurate grinding, honing, and polishing can be performed by efficiently lubricating the work material with the coolant liquid.

Further, a large number of circular buffing materials formed into a circular shape, and a large number of guide plates 42 made of paper, resin plates or metal plates having the same shape as the circular buffing members and radially forming coolant passage grooves on both sides thereof. are laminated, and two side wall guide plates 43 at both ends are laminated on the circular buff material with the passage groove facing the circular buff material, as shown in FIG. During the honing and polishing of the surface of the cutting material W, the coolant liquid CK is supplied from the shafts of the elastic buff rings 40 and 45 with good permeability to the gaps between the multi-layered buffing materials, and the circular buffing material is slightly removed from the outside. Increase the diameter in the radial direction. At the same time, the work material W is efficiently lubricated by the coolant liquid CK ejected from the outer peripheral surface of the elastic buff ring, so that highly accurate grinding, honing, and polishing can be performed.

That is, the coolant liquid of static pressure or pulsating pressure controlled by the NC program from the coolant supply device 50 is fed into the shaft core portion of the elastic buff ring from the center through hole S drilled in the main shaft of the processing machine. When it passes through each passage groove of each guide plate in the elastic buff ring, it penetrates each circular buff material and efficiently and intensively jets it from the outer peripheral surface of the elastic buff ring to the work material, honing or polishing, so polishing is performed. Machining can be performed under optimum conditions by controlling the coolant liquid to a static pressure or a pulsating pressure according to the situation.

In addition, in the processing method using the elastic buff ring, in each elastic buff ring, the coolant supply device 50 is controlled by the NC program, and the coolant liquid CK of static pressure or pulsating pressure is supplied to the main shaft of the processing machine. The coolant liquid was fed into the axial core of the elastic buff ring from the through, and the coolant slightly increased in diameter while penetrating into the circular buff material as it passed through each passage groove of the guide plate sandwiching the elastic buff ring from both sides. Grinding, honing or polishing is performed while cooling and lubricating the workpiece W by spraying it from the outer peripheral surface of the elastic buff rings 40 and 45, so that the coolant liquid is controlled to a static pressure or a pulsating pressure according to the polishing situation. Then, machining can be performed under optimum conditions.

In the processing method using the elastic buff ring, all coolant liquids are emulsions, and the emulsifiers and surfactants envelop the fine oil particles in this emulsion, preventing them from gathering on the water surface while being dissolved in water. The cooling effect of the water and the lubricating effect of the oil create a synergistic effect, which permeates the surface of the buffing cloth and enables grinding, honing or polishing to be carried out efficiently and without adverse effects.
In other words, when the coolant liquid CK is supplied to the gaps between the multi-layered buffing materials with good permeability, the circular buffing material is slightly increased in diameter in the outer diameter direction. This diameter-increasing expansion enhances the grinding action on the inner hole of the material to be cut. That is, the coolant permeates into the buffing cloth while slightly increasing the diameter of the circular buffing material in the outer diameter direction, and the grinding, honing or polishing is superior to the conventional grinding method.

The present invention is not limited to the elastic buff rings 40, 45 described above and the fabrication method thereof. For example, as shown in FIG. 6, in addition to (a) the disk H, (b) a pair of rod-shaped buffs B, B attached to the holder rod B0, and (c) it can also be used as a buffing material for the corrugated plate P. It is possible. Furthermore, it is a matter of course that the present invention is not limited to the one shown in the drawings and can be applied to various embodiments.

10, 20, 30, 40, 45 Elastic buff ring 41 Buff material 41a Circular buff material CK Coolant liquid 42a Passage groove 42 Coolant guide plate (groove plate between grindstones)
43 Side wall guiding plate 43a Passage grooves 40, 45 Elastic buff ring 50 Coolant supply device 60 NC control device P0 Static pressure P1, P2, P3 Pulsation pressure OK Cooling gas 70 Cold air supply device

Claims (1)

The buff material of the elastic buff ring for grinding, honing, and polishing the surface of the work material is a thin circular elastic body , and the thin circular elastic body is made of felt, woven fabric, non-woven fabric, leather, paper, It consists of a thin circular laminated ring made of either artificial or natural resin or rubber, or a mixture thereof, and abrasive grains are fixed to the entire thin circular laminated ring , or abrasive grains are attached to the outer peripheral surface of the thin circular laminated ring. It is a fixed elastic buff ring, and the elastic buff ring is formed into a circular buff material, and the paper or resin plate is the same shape as the circular buff material and has coolant liquid passage grooves formed radially on both sides. or a coolant guide plate made of a metal plate, and two side wall guide plates of the same type as the coolant guide plate and having coolant passage grooves formed on one side thereof and made of paper or a resin plate or a metal plate, and the circular In an elastic buff ring formed by laminating a buff material and a coolant guide plate, and sandwiching and laminating two side wall guide plates on both ends of the circular buff material toward the circular buff material,
The coolant liquid from the coolant supply device is made into an emulsion and sent into the axial core portion of the elastic buff ring through the center through opened in the main shaft of the processing machine, and is fed into the passage grooves of the side wall guide plates sandwiching the elastic buff ring from both sides. When passing through the inside, the circular buff material is permeated into the circular buff material to slightly increase the diameter of the circular buff material, and then sprayed from the elastic buff ring to the surface of the work material to cool and lubricate the grinding point while grinding. A processing method using an elastic buff ring, characterized by honing or polishing.

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